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EP 1 740 731 A1

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(43) Date of publication: 10.01.2007 Bulletin 2007/02 (21) Application number: 05741003.7 (22) Date of filing: 29.04.2005

(51) International Patent Classification (IPC):  C22B 3/22(2006.01) C01G 49/06(2006.01) C22B 7/02(2006.01) C22B 3/06(2006.01) C22B 3/44(2006.01) (86) International application number: PCT/CA2005/000654 (87) International publication number: WO 2005/106053 (10.11.2005 Gazette 2005/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 29.04.2004 US 834522 (71) Applicant: Metalox International Breckenridge, CO 80424 (US)	(72) Inventors: KONINGEN, Darren Don Mills, Ontario M3A 1Y8 (CA) FREUND, William J. Silverthorne, Colorado 80498 (US) DREISINGER, David Bruce Delta, British Columbia V4K 4K2 (CA) (74) Representative: Dehmel, Albrecht  Herzogspitalstrasse 11 80331 München 80331 München (DE)